UOLEN300S
Product Model UOLEN®300S
Operating Temperature Range: 0°C to 300°C (32°F to 572°F)
UOLEN®300S is a hydrogenated synthetic heat transfer fluid. It is produced through a sophisticated refining process including high-pressure hydrogenation, hydrocracking, hydrotreating, and hydronishing, followed by vacuum distillation. The refined base oil is blended with functional additives to achieve high purity, free from organic impurities. With excellent thermal stability and high heat transfer efficiency, this fluid is specically designed for closed-loop circulation systems to operate within the range of 0°C to 300°C (32°F to 572°F), enabling rapid heating and cooling cycles with optimal heat exchange performance.
UOLEN300S
Product Features
  • Odorless, high smoke point, and comfortable to operate
  • Freezing point below -40°C (-40°F), colorless transparent liquid
  • Low kinematic viscosity at low temperatures, and good fluidity for low-temp. pump startup
  • Non-corrosive to metals, safe, and low-maintenance
  • Max. usable temp. up to 300°C(572°F), suitable for closed-loop systems
  • Recommended for food factories (occasional food contact)
Working Temperature Range
0°C to 300°C (32°F to 572°F)
Application Fields
Experimental research, new materials, new energy, petrochemicals,
biopharmaceuticals, pesticide synthesis and other fields.
Applicable Equipment
Thermal oil heaters, thermal processing equipment for food, enamel reactors,
mold temperature controllers, and high/low temperature circulation units.
Productpackaging
10L, 25L, 200L, and 1000L drums.
Specifications
Item Characteristic Parameter
Appearance Colorless transparent liquid
Composition Hydrogenated synthetic oil
Density (at 20°C/68°F) 0.851 g/cm³
Moisture content, max. 100 ppm
Flash point 193°C(379.4°F)
Auto-ignition point 413°C(775.4°F)
Viscosity 0°C(32°F) 216 mm²/s
40°C(104°F) 23 mm²/s
100°C(212°F) 4 mm²/s
Pour point <-40°C(-40°F)
Specific heat (at 100°C/212°F) 1.781 KJ/(kg·k)
Thermal conductivity (at 20°C/68°F) 0.1421 (w/m·k)
Normal boiling point >340°C(644°F)
Total acidity <0.01 mg/kg(KOH)
Sulfur content <10 ppm
Chlorine content <10 ppm
Copper strip corrosion (at 100°C/212°F, 3h) <1a
Expansion coefficient (at 100°C/212°F) 0.00075 K⁻¹
Pumpability performance 300 mm²/s >-10°C(14°F)
Max. bulk temperature 300°C(572°F)
Max. film temperature 345°C(653°F)
*The above data are obtained from laboratory tests on samples and may vary between batches.

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